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3 years ago

Whoever gets right I will give you Brainly

Chemistry

2 answers:

Ne4ueva [31]3 years ago

5 0

Answer:

it's either b or d

Explanation:

my guess is b

Volgvan3 years ago

5 0

Answer:

Explanation:

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devlian [24]

Answer:

The final temperature of both substances at thermal equilibrium is 17.3°C

Explanation:

To calculate the final temperature of both substances at thermal equilibrium -:

First , we calculate the heat of A1 cube as follows -

q= mSΔT

(where q = heat of the cube , m = mass of cube , S= specific heat of cube {0.902j/g°C}, T = Temperature )

Putting the values given in the question ,

$q= 32.5g\times0.902\j/g$ ° $C$ $\times(T_f-45.8$ ° $C)$

$29.315\times(T_f-45.8)J$

Now , calculate the heat of water -

q=mSΔT

Putting values from the question ,

$q=105.3g\times4.18j/g$ ° $C$ $\times (T_f-15.4$ ° $C)$

= $440.154\times(T_f-15.4)J$

Now ,

Heat lost by water A1= Heat gained by water [negative sign about heat lost]

$-29.315\times(T_f-45.8)J$ $=440.154\times(T_f-15.4)J$

$\frac{-(T_f-45.8)J}{T_f-15.4)J} =\frac{440.154}{29.315}=15.0$

$-T_f+45.8$ ° $C=15T_f-231.2$ ° $C$

$(45.8+231.2)$ ° $C$ = $16T_f$

$16T_f=277.03$ ° $C$

$T_f=\frac{277.03}{16}$ = 17.3°C

Therefore , the final temperature of both substances at thermal equilibrium is 17.3°C

3 0

3 years ago

What is the basic unit for measuring length

scoundrel [369]

The answer is meter

8 0

4 years ago

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Which force always attracts objects to each other?

GrogVix [38]

Gravity is a force that always attracts or pulls objects toward each other without direct contact or impact. Gravitational attraction depends on the mass of the two objects and the distance they are apart. Objects on Earth are pulled toward the center of Earth.

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3 years ago

To fight a bacterial infection, a patient was given an antibiotic to take for 10 days.

Bezzdna [24]

Answer: B

Explanation: trust me

8 0

3 years ago

How does a calorimeter follow the Law of Conservation of Energy?

dusya [7]

It is based on the law of conservation of energy , which says that energy is neither created nor destroyed during a chemical reaction . I’m calorimeter , this means that the heat gained by the water in calorimeter must have been released by the sample or reaction taking place in the calorimeter .

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4 years ago

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